18493025

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{821}}^1$

素因数の和:901

約数の個数: 24

約数和(自身を含む): 24768504

約数和(自身を除く): 6275479

約数列:

[1, 5, 17, 25, 53, 85, 265, 425, 821, 901, 1325, 4105, 4505, 13957, 20525, 22525, 43513, 69785, 217565, 348925, 739721, 1087825, 3698605, 18493025]

約数ペア:

[(1, 18493025), (5, 3698605), (17, 1087825), (25, 739721), (53, 348925), (85, 217565), (265, 69785), (425, 43513), (821, 22525), (901, 20525), (1325, 13957), (4105, 4505)]